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/**************************************************************************
**
** $Id: pcibios.h,v 2.1 94/09/16 08:01:37 wolf Rel $
**
** #define for pci-bus bios functions.
** #define for pci configuration space registers.
**
** 386bsd / FreeBSD
**
**-------------------------------------------------------------------------
**
** Copyright (c) 1994 Wolfgang Stanglmeier. All rights reserved.
** Copyright (c) 1994 Charles Hannum. All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
**-------------------------------------------------------------------------
*/
#ifndef __PCIBIOS_H__
#define __PCIBIOS_H__
/*
** the availability of a pci bus.
** configuration mode (1 or 2)
** 0 if no pci bus found.
*/
int pci_conf_mode (void);
/*
** The number of the last available pci bus.
*/
int pci_last_bus (void);
/*
** get a "ticket" for accessing a pci device
** configuration space.
*/
pcici_t pcitag (unsigned char bus,
unsigned char device,
unsigned char func);
/*
** read or write the configuration space.
*/
u_long pci_conf_read (pcici_t tag, u_long reg );
void pci_conf_write (pcici_t tag, u_long reg, u_long data);
/*------------------------------------------------------------------
**
** Names for PCI configuration space registers.
**
** Copyright (c) 1994 Charles Hannum. All rights reserved.
**
**------------------------------------------------------------------
*/
/*
* Device identification register; contains a vendor ID and a device ID.
* We have little need to distinguish the two parts.
*/
#define PCI_ID_REG 0x00
/*
* Command and status register.
*/
#define PCI_COMMAND_STATUS_REG 0x04
#define PCI_COMMAND_IO_ENABLE 0x00000001
#define PCI_COMMAND_MEM_ENABLE 0x00000002
#define PCI_COMMAND_MASTER_ENABLE 0x00000004
#define PCI_COMMAND_SPECIAL_ENABLE 0x00000008
#define PCI_COMMAND_INVALIDATE_ENABLE 0x00000010
#define PCI_COMMAND_PALETTE_ENABLE 0x00000020
#define PCI_COMMAND_PARITY_ENABLE 0x00000040
#define PCI_COMMAND_STEPPING_ENABLE 0x00000080
#define PCI_COMMAND_SERR_ENABLE 0x00000100
#define PCI_COMMAND_BACKTOBACK_ENABLE 0x00000200
#define PCI_STATUS_BACKTOBACK_OKAY 0x00800000
#define PCI_STATUS_PARITY_ERROR 0x01000000
#define PCI_STATUS_DEVSEL_FAST 0x00000000
#define PCI_STATUS_DEVSEL_MEDIUM 0x02000000
#define PCI_STATUS_DEVSEL_SLOW 0x04000000
#define PCI_STATUS_DEVSEL_MASK 0x06000000
#define PCI_STATUS_TARGET_TARGET_ABORT 0x08000000
#define PCI_STATUS_MASTER_TARGET_ABORT 0x10000000
#define PCI_STATUS_MASTER_ABORT 0x20000000
#define PCI_STATUS_SPECIAL_ERROR 0x40000000
#define PCI_STATUS_PARITY_DETECT 0x80000000
/*
* Class register; defines basic type of device.
*/
#define PCI_CLASS_REG 0x08
#define PCI_CLASS_MASK 0xff000000
#define PCI_SUBCLASS_MASK 0x00ff0000
/* base classes */
#define PCI_CLASS_PREHISTORIC 0x00000000
#define PCI_CLASS_MASS_STORAGE 0x01000000
#define PCI_CLASS_NETWORK 0x02000000
#define PCI_CLASS_DISPLAY 0x03000000
#define PCI_CLASS_MULTIMEDIA 0x04000000
#define PCI_CLASS_MEMORY 0x05000000
#define PCI_CLASS_BRIDGE 0x06000000
#define PCI_CLASS_UNDEFINED 0xff000000
/* 0x00 prehistoric subclasses */
#define PCI_SUBCLASS_PREHISTORIC_MISC 0x00000000
#define PCI_SUBCLASS_PREHISTORIC_VGA 0x00010000
/* 0x01 mass storage subclasses */
#define PCI_SUBCLASS_MASS_STORAGE_SCSI 0x00000000
#define PCI_SUBCLASS_MASS_STORAGE_IDE 0x00010000
#define PCI_SUBCLASS_MASS_STORAGE_FLOPPY 0x00020000
#define PCI_SUBCLASS_MASS_STORAGE_IPI 0x00030000
#define PCI_SUBCLASS_MASS_STORAGE_MISC 0x00800000
/* 0x02 network subclasses */
#define PCI_SUBCLASS_NETWORK_ETHERNET 0x00000000
#define PCI_SUBCLASS_NETWORK_TOKENRING 0x00010000
#define PCI_SUBCLASS_NETWORK_FDDI 0x00020000
#define PCI_SUBCLASS_NETWORK_MISC 0x00800000
/* 0x03 display subclasses */
#define PCI_SUBCLASS_DISPLAY_VGA 0x00000000
#define PCI_SUBCLASS_DISPLAY_XGA 0x00010000
#define PCI_SUBCLASS_DISPLAY_MISC 0x00800000
/* 0x04 multimedia subclasses */
#define PCI_SUBCLASS_MULTIMEDIA_VIDEO 0x00000000
#define PCI_SUBCLASS_MULTIMEDIA_AUDIO 0x00010000
#define PCI_SUBCLASS_MULTIMEDIA_MISC 0x00800000
/* 0x05 memory subclasses */
#define PCI_SUBCLASS_MEMORY_RAM 0x00000000
#define PCI_SUBCLASS_MEMORY_FLASH 0x00010000
#define PCI_SUBCLASS_MEMORY_MISC 0x00800000
/* 0x06 bridge subclasses */
#define PCI_SUBCLASS_BRIDGE_HOST 0x00000000
#define PCI_SUBCLASS_BRIDGE_ISA 0x00010000
#define PCI_SUBCLASS_BRIDGE_EISA 0x00020000
#define PCI_SUBCLASS_BRIDGE_MC 0x00030000
#define PCI_SUBCLASS_BRIDGE_PCI 0x00040000
#define PCI_SUBCLASS_BRIDGE_PCMCIA 0x00050000
#define PCI_SUBCLASS_BRIDGE_MISC 0x00800000
/*
* Mapping registers
*/
#define PCI_MAP_REG_START 0x10
#define PCI_MAP_REG_END 0x28
#define PCI_MAP_MEMORY 0x00000000
#define PCI_MAP_IO 0x00000001
#define PCI_MAP_MEMORY_TYPE_32BIT 0x00000000
#define PCI_MAP_MEMORY_TYPE_32BIT_1M 0x00000002
#define PCI_MAP_MEMORY_TYPE_64BIT 0x00000004
#define PCI_MAP_MEMORY_TYPE_MASK 0x00000006
#define PCI_MAP_MEMORY_CACHABLE 0x00000008
#define PCI_MAP_MEMORY_ADDRESS_MASK 0xfffffff0
/*
* Interrupt configuration register
*/
#define PCI_INTERRUPT_REG 0x3c
#define PCI_INTERRUPT_PIN_MASK 0x0000ff00
#define PCI_INTERRUPT_PIN_EXTRACT(x) ((((x) & PCI_INTERRUPT_PIN_MASK) >> 8) & 0xff)
#define PCI_INTERRUPT_PIN_NONE 0x00
#define PCI_INTERRUPT_PIN_A 0x01
#define PCI_INTERRUPT_PIN_B 0x02
#define PCI_INTERRUPT_PIN_C 0x03
#define PCI_INTERRUPT_PIN_D 0x04
#define PCI_INTERRUPT_LINE_MASK 0x000000ff
#define PCI_INTERRUPT_LINE_EXTRACT(x) ((((x) & PCI_INTERRUPT_LINE_MASK) >> 0) & 0xff)
#define PCI_INTERRUPT_LINE_INSERT(x,v) (((x) & ~PCI_INTERRUPT_LINE_MASK) | ((v) << 0))
#endif
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